At least I think it's R134, I may totally off base here, but I know it's not the old R12 freon.
![dunce :dunce:](./images/smilies/smile_dunce.gif)
The system never has really blown what I would call cold air, even when it was new.
The compressor is cycling on what I consider too frequently, but I know squat about A/C systems.
Is this a sign that the freon pressure is low?
Is adding freon to the system something I can do in my driveway (legally)?
Why is it the front system will not blow cool air unless the rear system is turned on?
I've heard radio ads about something called perma-frost that can be added to the system that supposedly drops the air temp by 10 degrees. Anyone used this or something similar? does it work?
Last question: Looking under the hood this afternoon it dawned on me that none of the A/C system hoses have any insulation or foil tape on them. They get pretty well heat soaked in the tight engine compartment. This can't be helping things. Should any of the hoses be insulated?